Burner



Q E in 8: *5 5 A, Y a E w m R2 om. um .BD 0 a e c n F May 22, 1923.

AITEI NEIY CHARLES 0. RDWLEY, 01F TOLEDO, OEIQ.

BURNER- Application filed December 2, 1921.

To all whom it may concern:

Be it known that 1, CHARLES O. Rownnr, a citizen of the United States of America, residing at Toledo, Lucas County, Ohlo, have invented new and useful Burners, of which the following is a specification.

This invention relates to burners for liquid fuel.

This invention has utility when incorporated in a gravity supply of oil for natural draft furnaces.

Referring to the drawings:

Fig. 1 is a section of a furnace showing an embodiment of the invention incorporated therewith;

Fig. 2 is a detail view with away, of the burner proper;

Fig. 3 is a plan view with parts broken away, showing the burner flue on the line TIL-III, Fig. 2; and

Fig. 4 is a fragmentary side elevation showing supply line for fuel as entering burner proper.

A hot air furnace 1 is shown as provided with a combustion chamber 2 having fire door 3 as normal fuel supply therefor. Below this combustion chamber 2 is a grate 4 over ashpit 5 having ashpit door 6 in communication therewith.

A liquid fuel tank'7, say for a low grade fuel oil, is shown as having valve control outlet 8 past gravity strainer 9 to fuel supply line 10 extending through ashpit door 6 to the ashpit 5 below the grate 4. This fuel supply line 10 is shown as extending by way of guide tube 11 into central flue 12 of the burner. The position of this fuel supply line is adjusted as to the pipe 11 by set screws 13.

This central vertical flue 12 of the burner is shown as having a lower enlarged section 14 resting within flange 15 of base plate or an 16 for the burner. In starting the parts broken urner the valve 8 is open and the supply of 7 fuel is delivered into the flue 12 and such is ignited say by dropping a flame thereinto.

At first this 1i uid urns in the bottom of the pan 16. ear the bottom of this pan 16 or within this portion 14 of the flue 12 there is inwardl extending flange 17 below air supply openings 18, 19. This flange 17 Serial No. 519,352.

protects the fuel so that the air is directed thereover in burning the liquid fuel in starting the combustion. Thereafter the air supply is so directed in this fuel combustion that there is eliminated .or minimized the coking 'action. As the burner warms up, the combustion,

being incomplete in this lowerregion, is

aided by further air supply through openings. or ways 20 in the region 12 of the flue. As atmospheric conditions as well as fuel conditions vary, there is occasion frequently for adjusting this secondary air supply. To

this end, surrounding this flue 12 adjacent these annular series of openings 20, is a sleeve 21 havin openings 22 therein which may be adjusteg more or less into re ister with the openings 20, by shifting han le 23 extending through the ashpit door 6. Full cutting ofl of the air supply of these openings 20 is not permitted because the openin 24 at the inlet pipe 11 is only elongated su ficiently to take air fully open and for incomplete shutting off of the opening of the secondary air supply, Air is also supplied around the pipe 10 through the sleeve 11 and additionally keeps such supply of fuel from coking in the pipe 10. As the burner warms up there is a of the flame and the vzilve 8 may be turned down to allow the drippin as a supply freely flowing for falling o? the fuel supply into this flue 12. This generous rolling out of a white flame may be .nore or less confined to the flue 12 by introducing back pressure, say by having legs 25 rise from this flue 12 to carry a hood or cap 26 having a skirt 27. As the burner warms up in operation this flue 12 reaches incandescence m and there is accordingly a carburetor proper formed by this burner in its actual operation, the carburation stage occuring in the chamber, and in practice it has been found that such does 35 not choke or clog the sufpply line 10. In practice, this avoidance o coking in the supply line 10 is a situation not arisin when delivery end 28 of this supplyline 10 1s deflected slightly downwardly so that there am is most free floweof the liquid supply as it enters the flue 12.

enerous rolling out 9 In this operation of the burner it is very desirable that. all of the air be supplied to the flue 12 below the upper outlet portion :29 thereof. To this end there is disposed upon the grate region 4 a baffle 30 coming up snugly about the flue 12 and completely closing ashpit 5 from the combustion chamber 2. This baffle 30 is a means insuring that all of the air supply for combustion is to the flue below the flue discharge opening. Accordingly, with ample air supply through the ashpit door 6 there is all the air, both primary and secondary, supplied to this burner for the combustion in the combustion chamber 2.

In some instances in practice there may be advantage in supplying water as a steam I with the burner, to thereby increase the efliciency of combustion. To this end water supplv valve 31 in water supply line32 may be adjusted for just supplying a seeping or dripping of water to coil 33 about the enlarg'ement 14 of the fine 12. This generates steam in this line 33 to be discharged by way of duct 34 into the flue 14, 12. V.

In practice this burner is one which will operate quietlv and handle low grade or c eap oil for effective complete combustion.

This accordingly produces a clean fuel withoutsmoke, and the roar even in normal operation say in a hot air heated house, is not such as to cause disturbance in the rooms above, as it is not really a roar but a sort of quiet hum. The flame is a voluminous rolling out white flame with considerable heat value and in the burner combination as herein disclosed is one which can have the heat units thereof effectively used in this burner either for hot air, steam or other purposes, and so disposed in installat-ionas not to act deleteriously upon the furnace proper.

\Vhile the valve 8 may adjust the initial supply of fuel from the tank 7, it is advantageous to provide in the line 10 an additional control valve 35 which may be adjusted to regulate the flow for uniform delivery at an adjusted slow rate. This flow may be rendered more uniform by further providing in this line 10 between the valve 35 and the burner a T 36 with a riser 37 therefrom. This riser 37 is of suflicient height that there may not be overflow, while it further serves as an air intake for accelerating the flow of the fuel from the valve 35 into the burner.

What is claimed and it is desired to secure by Letters Patent is:

LA burner comprising a gravity supply line, means for adjusting the flow of fuel from said line. a combustion chamber having therein av pan and a flue upward from the pan, said line serving as means for conducting a fuel su ply for freely flowing therefrom for falling into the flue toward the pan centrally thereof, there being air supply ways into the flue in annular series ad acent the pan and adjacent the fuel supply into and through the flue,said flue having an upper discharge opening, means for confinin distribution of air supply to the flue to be ow said discharge opening, and means for holding heat in the flue as a chamber to approximate incandescence.

2. In a furnace rovided with a combustion chamber an an ashpit, a burner in said pit, said burner comprising agravity supply line, means for adjusting the-flow of fuel from said line, a combustion chamber having therein a pan and a flue upward from the pan, for extending upward into the furnace combustion chamber, said line serving as means for conducting a fuel supply for freely flowin therefrom for falling into the flue toward t e pan centrally thereof, there being series of air supply ways into the flue adjacent the pan and adjacent the fuel supply into and through the flue, said flue having an upper discharge opening, a baffle at the grate line of the air supply to the furnace combustion chamber to through the flue opening, and means for holding heat in the combustion chamber entering portions of the flue for assisting combustion.

3. A burner comprising a gravity supply line, means for adjusting the flow of fuel from said line, a combustion chamber having therein a pan and a flue upward from the pan, said line serving as means for conducting a fuel supply for freely flowing distribution of air supply to the flue to below said discharge opening.

4. A burner comprising a gravity supply line, means for adjusting the flow of fuel from said line, a combustion chamber having therein a pan and a flue upward from the pan, said line serving as means for conductmg a fuel supply for freely flowing therefrom for falling into the flue toward the pan centrally thereof, there being upper and lower air supply ways into the flue adjacent the pan and adjacent the fuel supply into and through the flue, means for adjusting the upper air supply ways, draft retarding heat holding means for the upper portions of the flue, said flue having an upper discharge opening, and means for confinin distribution of air supply to the flue to be ow said discharge opening.

5. A burner comprising a gravity sup ly line, means for adjusting the flow of final from said line, a combustion chamber having therein a pan and a flue upward from the pan, said l ne serving as means for conducting a fuel supply for freely flowing tribution pf air supply to the flue to below therefrom for falling into the flue toward said discharge opening, and a steam coil the pan centrally thereof, there being air heated by the -fiue for delivering steam into 10 supply ways into the flue adjacent the pan said flue.

5 and adjacent the fuel supply into and In witness whereof I aflix my signature.

through the flue, said flue. having an upper discharge opening, means for confining dis- CHARLES 0. ROWLEY. 

